/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.paimon.metastore;

/** Statistic for partition. */
public interface PartitionStats {

    long numFiles();

    long totalSize();

    long numRows();

    long lastUpdateTimeMillis();

    static PartitionStats create(
            long numFiles, long totalSize, long numRows, long lastUpdateTimeMillis) {
        return new PartitionStats() {

            @Override
            public long numFiles() {
                return numFiles;
            }

            @Override
            public long totalSize() {
                return totalSize;
            }

            @Override
            public long numRows() {
                return numRows;
            }

            @Override
            public long lastUpdateTimeMillis() {
                return lastUpdateTimeMillis;
            }

            @Override
            public String toString() {
                return String.format(
                        "numFiles: %s, totalSize: %s, numRows: %s, lastUpdateTimeMillis: %s",
                        numFiles, totalSize, numRows, lastUpdateTimeMillis);
            }
        };
    }
}
